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(11) | EP 1 918 938 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Gate driving circuit, display apparatus having the same, and method thereof |
| (57) In a gate driving circuit and a display apparatus having the gate driving circuit,
a pull-up transistor of a present stage among plural stages, which are connected one
after another to each other and sequentially output a gate signal, pulls up a present
gate signal output through an output terminal to a gate-on voltage. A buffer transistor
is connected to a control terminal of the pull-up transistor to receive a previous
output signal from a previous stage and to turn on the pull-up transistor. The buffer
transistor has a chargeability that is about two times or greater than the chargeability
of the pull-up transistor. Thus, the size of the pull-up transistor may be reduced,
thereby preventing a malfunction of the gate driving circuit when the gate driving
circuit is operated under conditions of high temperature or low temperature.
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